Author Topic: Governor mod problem (Read 4559 times)

jauguston · « **on:** December 12, 2007, 08:30:08 pm »

Hello group. I am new here and I just put a '89 1.6TD in my Suzuki Samurai. I read a lot of the information in the FAQ section to learn what I could about this little engine. I am a retired crane operator and heavy duty mechanic but know little about this engine.

Before I put the engine in I had a friend that runs a pump shop here in Bellingham, WA pull the cover off of my turbo pump with the idle adjustment linkage on the back side. I removed the intermediate spring and put a spacer shim in its place. He put the pump back together.

I have the same problem that "leprechan" said he had when he tried it. When the engine is revved up very high it doesn't want to slow back down. No changes have been made to any of the pump adjustments. I sure could use some help.

Jim

Bellingham,WA

westcoaster · « **Reply #1 on:** December 12, 2007, 09:17:13 pm »

Ah Ha!

I'm not alone....

Welcome!

jimfoo · « **Reply #2 on:** December 12, 2007, 09:52:49 pm »

You need to back off the residual fuel screw, or even better, put the intermediate spring back in and shim the main spring instead. Shimming the intermediate spring is what causes the problem, and will also cause driveability problems if you go off road. BTDT

lyeinyoureye · « **Reply #3 on:** December 13, 2007, 02:55:32 am »

Exactly. The intermediate spring is what controls how fast engine speed increases or decreases, which is known as the speed drop. I think shimming that spring decreases the speed drop by compressing it and increasing the spring rate proportionally. Cutting a bit out of it or replacing it w/ a spring with a lower spring rate would do the opposite, making it increase/decrease speed faster.

jauguston · « **Reply #4 on:** December 13, 2007, 08:08:45 am »

Is there anyone here that has gotten the mod to work the way fspGTD described in his posting on the FAQ. If this is something that just plain doesn't work why have the moderators left it on the FAQ list?

Westcoaster,

Hello neighbor. I got my engine from Eric at Gordon's VW in Langley and my adapter kit, down pipe, and radiator and fans kit from Jeff at Acmeadapters.

I have had it on the road for three days now and it is a real PITA to drive with the throttle the way it is.

Jim

Vincent Waldon · « **Reply #5 on:** December 13, 2007, 08:19:00 am »

Quote from: "jauguston"

If this is something that just plain doesn't work why have the moderators left it on the FAQ list?

There's a big sign posted above this forum (and everything else on the Internet, for that matter):

"Read lots *before* you begin... your mileage may vary"

In this specific case there are many ways to modify the gov... each with their own pros and cons... and the moderators are not traffic cops of which one is *best* !!!

lyeinyoureye · « **Reply #6 on:** December 13, 2007, 08:26:25 am »

There's no spring there at all? As well as

Quote from: "Bosch"

providing a "soft" transition to the uncontrolled range.

it looks like the intermediate spring would automatically push out once the tension from the accelerator cable had been removed. It seems like w/o this, the engine won't come down from whatever speed/fuel delivery level because the spring isn't there to push the min-max governor back to the idle position.

jimfoo · « **Reply #7 on:** December 13, 2007, 08:28:51 am »

The thing is that Jake raced his car. The intermediate mod gives great pickup, but for every day driving, it isn't so great. Later on in the FAQ, Tintin or someone else does say to not do the intermediate spring and just shim the main spring instead as it will cause driveability problems. I kind of got used to it on the road, but it was hard to compensate for off road in low range.

jauguston · « **Reply #8 on:** December 13, 2007, 08:43:52 am »

Vince,

Relax, I am just curious if the replies I am getting are all "It won't work" are correct I can certainly deal with that but that post on how to do it was done in 2005 and added to the FAQ's some time later. On most forums I frequent things don't usually get moved to the FAQ section unless they are credible. It just may be that the answers I have gotten are not from guys that have actually done the mod but are repeating what they have heard. We all know the information we get on these forums is sometimes worth exactly what we pay for it and that is OK. I am pretty sure that somewhere between what fspGTD posted and what is being posted here it can be figured out.

BTW, what screw is the residual fuel screw and how do I identify it?? Is that the screw with the crimped on security collar on it. The one referred to as the "Smoke Screw" (-:

Jim

jimfoo · « **Reply #9 on:** December 13, 2007, 08:49:10 am »

The screw is on the opposite side of the LDA from this one, and the throttle lever stops against it . It looks just like the long visible screw you can see. No collar.

jauguston · « **Reply #10 on:** December 13, 2007, 09:03:26 am »

Thanks Jim.
I will go out and see if I can get that to change anything. I sure don't want to have to deal with unusual drivability issues with this thing. I had enough of that with the POS Hitachi carb on the Samurai 1.3 stock carb. If nothing else I will put the spring back in.

Jim

jauguston · « **Reply #11 on:** December 13, 2007, 10:59:56 am »

jimfoo - "you da MAN"

One turn out on the residual fuel screw and the problem is COMPLETELY gone. I'm one happy old man! Thank you all for your help.

Jim

carrizog60 · « **Reply #12 on:** December 13, 2007, 11:46:15 am »

and for those who got the residual screw to the point that the rpm wont go down?

jauguston · « **Reply #13 on:** December 13, 2007, 12:57:48 pm »

I don't know if it matters with this issue but I understand that all the turbo pumps aren't like mine. Mine has the idle linkage behind the pump and I don't think they all have that.

Jim